[SyncFS] Add TaskLogger and wire up it.

chrome/browser/sync_file_system/drive_backend/sync_engine_context.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/sync_file_system/drive_backend/sync_engine_context.h"
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
 #include "chrome/browser/drive/drive_service_interface.h"
 #include "chrome/browser/drive/drive_uploader.h"
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.h"
 #include "chrome/browser/sync_file_system/remote_change_processor.h"
+#include "chrome/browser/sync_file_system/task_logger.h"
 
 namespace sync_file_system {
 namespace drive_backend {
 
 SyncEngineContext::SyncEngineContext(
     scoped_ptr<drive::DriveServiceInterface> drive_service,
     scoped_ptr<drive::DriveUploaderInterface> drive_uploader,
+    TaskLogger* task_logger,
     base::SingleThreadTaskRunner* ui_task_runner,
     base::SequencedTaskRunner* worker_task_runner,
     base::SequencedTaskRunner* file_task_runner)
     : drive_service_(drive_service.Pass()),
       drive_uploader_(drive_uploader.Pass()),
+      task_logger_(task_logger
+                   ? task_logger->AsWeakPtr()
+                   : base::WeakPtr<TaskLogger>()),
       remote_change_processor_(NULL),
       ui_task_runner_(ui_task_runner),
       worker_task_runner_(worker_task_runner),
       file_task_runner_(file_task_runner) {}
 
 SyncEngineContext::~SyncEngineContext() {}
 
 drive::DriveServiceInterface* SyncEngineContext::GetDriveService() {
   return drive_service_.get();
 }
 
 drive::DriveUploaderInterface* SyncEngineContext::GetDriveUploader() {
   return drive_uploader_.get();
 }
 
+base::WeakPtr<TaskLogger> SyncEngineContext::GetTaskLogger() {
+  return task_logger_;
+}
+
 MetadataDatabase* SyncEngineContext::GetMetadataDatabase() {
   return metadata_database_.get();
 }
 
 scoped_ptr<MetadataDatabase> SyncEngineContext::PassMetadataDatabase() {
   return metadata_database_.Pass();
 }
 
 RemoteChangeProcessor* SyncEngineContext::GetRemoteChangeProcessor() {
   return remote_change_processor_;
@@ skipping 18 matching lines @@
 }
 
 void SyncEngineContext::SetRemoteChangeProcessor(
     RemoteChangeProcessor* remote_change_processor) {
   DCHECK(remote_change_processor);
   remote_change_processor_ = remote_change_processor;
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system